htocpp.py

import os

ext = input("Do you want to convert .c or .cpp files? (default .cpp) (.cpp/.c)")

if ext == ".c":
    ext = ".c"
else:
    ext = ".cpp"

override = input("Do you want to override any existing {0} files? (You might lose contents of your {0} files) (Y/N) ".format(ext))
override = str.upper(override)

if override.startswith("Y"):
    override = input("Are you sure? (Y/N) ")
    override = str.upper(override)

    if override.startswith('Y'):
        override = 'w+'
    else:
        override = 'a'

    for filename in os.listdir():
        if filename.endswith(".h"):
            # Open/create header file
            header = open(filename, 'r')
            # Open/create .c/.cpp file
            file = open(filename.replace(".h", "{}".format(ext)), override)
            # Add include to file
            file.write('#include "{}"\n\n'.format(filename))

            # some variables
            inClass = 0
            inFunction = 0
            skipOneLine = False
            className = []

            # Checks each line in header
            for line in header:    
                if skipOneLine:
                    skipOneLine = False
                    continue

                # Removes spacing from each line
                line = line.lstrip()        

                # This string marks end of a class
                if "};" in line:
                    inClass -= 1
                    className.pop()
            
                # This checks if function has body inside header file
                # and skips over this body
                if line.startswith("{"):
                    inFunction += 1
                if line.startswith("}"):
                    inFunction -= 1

                # Check if inside a function's body, and skip this line if True
                skipLine = inFunction > 0

                # List of ignore strings that skip over this line
                ignoreStrings = ["//", "#", "public:", "private:", "protected:", "{", "};", "friend"]
                for i in ignoreStrings:
                    if i in line:
                        skipLine = True

                # List of required strings in order to create a function from this line
                requiredStrings = ["(", ";"]
                for r in requiredStrings:
                    if r not in line:
                        skipLine = True

                # If this line isn't skipped
                if not skipLine:
                    # Remove virutal keywords
                    function = line.replace("virtual ", "")

                    if inClass > 0:
                        # Check of this is constructor/destructor and add className:: to thier names
                        if function.startswith("operator") or function.replace("~", "").startswith(className[-1]):
                            function = "{}::".format(className[-1]) + function
                        # Else add className:: before function's name which should be right after first whitespace
                        else:
                            function = line.replace("virtual ", "")
                            function = function.replace(" ", " {}::".format(className[-1]), 1)
                    
                    # Replace semicolon ; with empty body of a function
                    function = function.replace(";", "\n{\n\n}\n")

                    # Write function to file
                    file.write(function)
                
                # If class/struct string is in line extract it's name and append it to className list
                # and in next iteration start looking for class/struct functions
                if "class " in line:
                    inClass += 1
                    className.append(line.split("class ")[1].split(":")[0].rstrip())
                    className[-1] = className[-1].replace("\n", "")
                    skipOneLine = True            
                if "struct " in line:
                    inClass += 1
                    className.append(line.split("struct ")[1].split(":")[0].rstrip())
                    className[-1] = className[-1].replace("\n", "")
                    skipOneLine = True

                # This is only here because I'm lazy, but hey whatever works
                if "enum " in line:
                    inClass += 1
                    className.append(line.split("enum ")[1].split(":")[0].rstrip())
                    className[-1] = className[-1].replace("\n", "")
                    skipOneLine = True